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TYPE OF SENSORY RECEPTORS, THE SENSES, STRUCTURE, External ear: auricle,…
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THE SENSES
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Touch (pain,temperature,vibration)
STRUCTURE
EYES
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Vitreous humour, sclera, choroid, cornea
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Ciliary body, iris, pupils, lens
Retina: pigment epithelium, rods, cones
NOSE
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Odorant binds to receptor in olfactory, impulse generated run to olfactory bulb then to alfactory tract to olfactory cortex in brain
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TONGUE
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5 Sensation: sweet, sour, salty, bitter & umami
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EARS
Middle ear: tympanic cavity (3 tiny bones in auditory ossicles: malleus, incus, stapes)
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NERVE
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nerve fibers, endoneunium, penineunium, epineunium, blood vessels
*12 pairs cranial nerves (brain & sensory organ)
- 31 pairs of spinal nerves (spinal cord to most area of body from nerve plexuses)
Type:
- mixed neurons(transmit impulses from & to CNS)
- sensory neurons(transmit impulses to CNS)
3.motor neurons(transmit impulses from CNS)
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External ear: auricle, helix, lobule, auditory canal leads to tympanic membrane